Adrian livingston bogart



' (No Model.)

A. L. BOGART.

INSULATING ELECTRODES FOR ELECTRIC GAS LIGHTING BURNERS. No. 605,661.Patented June 14,1898.

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ADRIAN LIVINGSTON BOGART, OF JAMAICA, NEW YORK, ASSIGNOR' TO TVILLIAM B.M. JORDAN, OF NETV YORK, N. Y.

INSULATING ELECTRODES FOR ELECTRIC GAS-LIGHTING BURNERS.

SPECIFICATION forming part of Letters Patent No. 605,661, dated June14:, 1898.

Application filed May 5, 1897,

To (all lull/omit may concern:

Be it known that I, Annmnlnvinesron IBOGART, a citizen of the UnitedStates, residing at Jamaica, in the county of Queens and State of NewYork, have invented a certain new and useful Improvement in Methods ofInsulating Electrodes in Electric Gas-Lighting Burners, of which thefollowing is aspeci- Iication.

This invention relates to electric gas-lighting, whether performed byinduced or static currents of high potential, the spark forignition ofthe gas being the result of the electricity jumping across a gap betweentwo rigidly-fixed electrodes. l-Ieretofore it has been the custom in theconstruction of gasburners for this purpose to either use a'rigidelectrode or electrodes secured upon or about an insulating-pillar ofglass, porcelain, steatite, or other heat-resisting solid insulator, theelectrode or electrodes being usually free throughout theirlengtlnexcepting where supported at one end, or else where the nature ofthe burner, as in an Argand or incandescent gas-burner, was such aswould not permit of their being free and unobstructed as to position toinelose them in part at least within an envelop of glass or similarmaterial in'the shape of a tube. This latter plan was particularlynecessary where incandescent gas-burners of the VVelsbach type were tobe ignited in series, as the structure of the burner itself is verycomplicated and difficult to fit up. The base of the TVelsbach burner ispartially closed. A projection and framework are encountered between thetip and the lower part, known as the gallery, and, finally, at the topof the burner the mantie is encountered. The electrode should pass upwithin the mantle. In this construction glass tubing when used toinsulate the electrode had to be necessarily employed throughout itswhole length up to the sparkpoint. The exterior diameterof such glasstubing inclosing the electrode must necessarily be as small as possible.Otherwise either the mantle would not pass over it or it would be caughtand torn in taking off old mantles and substituting new ones. Again,said glass tubing was apt to become melted or broken through the heat,and in securing it Serial No. 635,175. (N0 model.) I

to its place rigidly the glass tube would be ruptured on account ofuneven bearing.

The object of this invention is to furnish a means by which the condnoting-electrode can be insulated in a simple, cheap, and lastingmanner, providing flexibility throughout its length, so that it caneither be bent or adjust itself about any inequalities or projections onthe surface of the burner to which it is attached, and that it canbe asrigidly secured as required without regard to any friability as wouldoccur in the use of glass or analogous insulating material; lastly,thatits thickness will be but trifling, so that it shall not interfere withthe putting on or taking off of mantles in the case of the \Velsbaohtype of burner, and, further, that it' may be made transparent, so asnot to cutoff the light or throw shadows.

Practically my invention consists in the use of an insulator like mica,"which is refractory, but can be used in comparatively thin and flexiblesheets and in threading the metallic conductor through this mica stripfrom one side to the other, as occasion arises, to supply insulation,the mica consequently being at all points between the conduct-ing-electrode and any metallic body that would cause the current toleave the conductor and jump to it. Thus the conducting-electrode maypass up almost entirely at one side of the mica strip, or, on the otherhand, it may be threaded from side to side many times, according to thenecessities of the metallic structure in which it is to be introduced. Ifurther than this employ the threading process to hold theconducting-electrode to the insulating-strip.

In the drawings accompanying this specification I show my invention asapplied to one style of the well-known W'elsbach incandescent light,such style being known as the No. 34. Figure 1 is a front View of suchN0. 34: vVelsbach light equipped with my de vice, but without mantle.Fig. 2 is a side elevation with a part of the gallery broken away; Fig.3, a front view of the electrode and insulation, and Fig. a a side view,Figs. 3 and 4 showing the electrode and insulating device prior to beingsecured to or upon the gas-burner.

A represents a TVelsbaoh incandescent light ICO of the type known as No.3:11, with its gallery B and air-shutter l) is a strip of mica orsimilar material hav ing its exterior cut or shaped in such manner as toreadily enter through the openings in the gallery and tapered off atitsnpperend l l.

I G II is the eondnoting-electrode, consisting of a metallic wire of asufficient degree of stoutness to answer the purpose. This wire isthreaded through openings in the insulating-strip at F, G, and II andterminates above at II in a spark-point and at its lower extremity I inan eye or loop. lVhen laid in its position in the Welsbach burner, asshown in Figs. 1 and 2, the insulating-strip rests between theconducting-electrode and the nearest metallic parts of the gallery andburner where insulation is required. It can be carefully titted beforeiinal introduction, the wire being given the proper sets and curves tomaize the entire device fit best to the surfaces upon and between whichitshall finally rest. The ins'ulatii'ig-strip being elastic willaccommodate itself to such eurvings of the more rigid wire and retainits format-ion. The insulating-strip I) maybe secured to the metallicsurface of the burner in any wellknown manner, as bysercws or pins, themate rial of the strip being tough and allowing of holes forsuch purposeto be drilled orpunched in it. I prefer, however, for simplicity, to usethe method of securing shown in the drawings, which is by means of abelt-clamp I, one end of which, J, has a slot through which the otherend of the strap K is passed, pulled up taut, and bent over, holding itsecurely in place. To insulate the conductor between G and II from thebelt I, I in this case employ a strip or strips of mica L. This strip ofmica Ii could extend the entire distance of the main strip D should theformation of the metallic body require both sides of theconductingelectrode F (l II to be protected. The loop or eye at thelower end F, Iemploy as a means of connecting one of theconducting-wires W from the spark-generator. Where more than one burneris to be ignited in a series, I insulate the entire metallic body of theburner upon a non-conducting pillar I. The circuit would pass throughthe wire IV to the conducting-electrode, up the same to the sparkpointat E, then jump through the air-gap from there to the metallic top ofthe burner, p reducing the spark for ignition,then through the metallicbody of the burner away at any point therefrom, as through the wire 'W,to the loop oreyc l of the nextbnrner in series.

I would not limit myself to the specific threading as shown, as it hasbeen SpOUlE'tllb' made to answer the purposes in this particular type ofburner, but maybe varied accord ing to the structure of the same inother types. The couducting-electrode wire need not be straight andplain, but can curve and zigzag, according to the necessities of thestructure through which it is introduced.

I claim- 1. In an electric igniting device, the combination with one ofthe electrodes formed of a metal wire or strip, of an insulatiiig-shicldthrough which said wire or strip is threaded, substantially as setforth.

2. In an electric igniting device, the combination with one of theelectrodes formed ol'a metal wire or strip, of a mica shield throughwhich said wire or strip is threaded, Sllbfil'ttih tially as set forth.

The combination with an electrically-ignited gas -burner, of a :llexibleinsulating shield or screen between the burner and one of theelectrodes, substantially as set forth.

et. The combination with an elcetricallyignited gas-burnm', of aflexible insulating sheet-like shield or screen to which one of theelectrodes is secured, substantially as set forth.

5. The combination with an electrically-ignited gas-burner, of aninsulating screen or shield between the Inn-nor and the other electrode,substantially as set forth.

(5. The combination with an electrically-ignited gas-burner, of a micascreen or shield between the burner and the other electrode saidelectrode being carried by the shield, substantially as set forth.

7. The combination in an electric gas-lighting device, of acondnctirig-electrode, an insulating flexible shield supporting thesaid. electrode and insulating it from adjacent motallic parts by havingthe same threaded therethrough, as described, and means for securingsaid strip in place, substantiallyas set forth.

This specification signed and witnessed this 28th day of April, 1807.

Witnesses:

Euenun Comma, JNo. It. 'IAYIKHL.

